DEFECT CHEMISTRY OF UNDOPED LA2CUO4

被引：19

作者：

HONG, DJL

SMYTH, DM

机构：

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1992年 / 97卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0022-4596(92)90052-W

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

La2CuO4 is an oxygen-excess, p-type material over the range 700-900°C and 10-2-105 Pa of oxygen. The major defects are interstitial oxygen and holes. The enthalpy of oxidation is near zero, and the hole mobility increases slightly with decreasing temperature, characteristic of band conduction. The preference for oxygen-excess nonstoichiometry is attributed to the presence of an interstitial site that is of adequate size for an oxide ion, to local charge and stress imbalances in the La2CuO4 lattice that favor the presence of holes in the CuO planes, and to large, negatively charged oxygen interstitials in the NaCl layers of the intergrowth structure. © 1992.

引用

页码：427 / 433

页数：7

共 20 条

[1]

[Anonymous], [No title captured], Patent No. [3.330.697, 3330697]

[2] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].

BEDNORZ, JG ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193

[3] SUPERCONDUCTIVITY OF LA2CUXO4-Y [J].

BEILLE, J ;

CHEVALIER, B ;

DEMAZEAU, G ;

DESLANDES, F ;

ETOURNEAU, J ;

LABORDE, O ;

MICHEL, C ;

LEJAY, P ;

PROVOST, J ;

RAVEAU, B ;

SULPICE, A ;

THOLENCE, JL ;

TOURNIER, R .

PHYSICA B & C, 1987, 146 (03) :307-311

[4] BULK SUPERCONDUCTIVITY AT 36 K IN LA1.8SR0.2CUO4 [J].

CAVA, RJ ;

VANDOVER, RB ;

BATLOGG, B ;

RIETMAN, EA .

PHYSICAL REVIEW LETTERS, 1987, 58 (04) :408-410

[5] EVIDENCE FOR SUPERCONDUCTIVITY ABOVE 40 K IN THE LA-BA-CU-O COMPOUND SYSTEM [J].

CHU, CW ;

HOR, PH ;

MENG, RL ;

GAO, L ;

HUANG, ZJ ;

WANG, YQ .

PHYSICAL REVIEW LETTERS, 1987, 58 (04) :405-407

[6] EVOLUTION OF THE SUPERCONDUCTING PROPERTIES IN THE LA2CUO4 LATTICE VERSUS OXYGEN-PRESSURE [J].

DEMAZEAU, G ;

TRESSE, F ;

PLANTE, T ;

CHEVALIER, B ;

ETOURNEAU, J ;

MICHEL, C ;

HERVIEU, M ;

RAVEAU, B ;

LEJAY, P ;

SULPICE, A ;

TOURNIER, R .

PHYSICA C, 1988, 153 :824-825

[7] CRYSTAL-CHEMISTRY AND SUPERCONDUCTIVITY OF THE COPPER OXIDES [J].

GOODENOUGH, JB ;

MANTHIRAM, A .

JOURNAL OF SOLID STATE CHEMISTRY, 1990, 88 (01) :115-139

[8]

HINKS DG, 1988, MATER RES SOC S P, V99, P9

[9]

HONG DJL, 1990, CERAMIC T, V13, P129

[10] SUPERCONDUCTING PHASE OF LA2CUO4+DELTA - A SUPERCONDUCTING COMPOSITION RESULTING FROM PHASE-SEPARATION [J].

JORGENSEN, JD ;

DABROWSKI, B ;

PEI, SY ;

HINKS, DG ;

SODERHOLM, L ;

MOROSIN, B ;

SCHIRBER, JE ;

VENTURINI, EL ;

GINLEY, DS .

PHYSICAL REVIEW B, 1988, 38 (16) :11337-11345

← 1 2 →